The nth term of a geometric sequence is
where a1 is the first term and r is the common ratio.
Identify
and r for each geometric sequence.
1, 3, 9, 27, ...
a
r =
8, 4, 2, 1, ...
a📷 =
r =
4, -16, 64, -256, ...
a📷 =
r =
Which of the following is a geometric sequence?
a) 0, 2, 6, 12, 72, . . .....
b) 4, 9, 14, 19, 24, . . .....
c) 1, 3, 9, 27, 81, . ....
d) 1/2, 2/3, 3/4, 4/5, 5/6, .........